Airtac MIJ Adjustable Cylinder MIJ25X40-30S
The AirTAC MIJ Adjustable Cylinder MIJ25X40-30S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø25mm bore and 40mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface fits standard ISO 6432 mini-cylinder mounting interfaces.
- BoreØ25 mm
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MIJ Adjustable Cylinder MIJ25X40-30S
Dial in a precise forward end position on-site with the AirTAC MIJ25X40-30S, a double-acting round-body mini cylinder featuring a 30 mm extend-stroke adjustment window. An external stop screw lets you trim the forward stroke anywhere from 10 to 40 mm, absorbing setup tolerances and eliminating the need to swap cylinders for multiple stop lengths. Retract remains at the full stroke. Built with a stainless-steel barrel and piston rod, this riveted construction resists mild corrosion and washdown environments.
The Ø25 mm bore conforms to the ISO 6432 mounting interface for standard mini brackets, uses a 1/8" port, and includes an M10x1.25 male rod thread. Because this SKU carries the -S suffix, a built-in piston magnet enables position sensing with CMSG, DMSG, or EMSG switches.
Airtac MIJ Adjustable Cylinder MIJ25X40-30S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ25X40-30S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø25mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 kgf |
MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MIJ Adjustable Cylinder MIJ25X40-30S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -30 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ25X40-30S Is Used
Tolerance Take-Up Diverter
Trim the extend stroke on the fly to compensate for carton size changes on a conveyor line, ensuring the 12.5 kg vertical lift capacity meets varying package weights.
Multi-Position Feed Mechanism
Use the external stop screw to set intermediate forward positions for staged material feeding, leveraging the 1/8" port and 30-800 mm/s speed for rapid cycling.
Is the Airtac MIJ Adjustable Cylinder MIJ25X40-30S the Right Cylinder?
The Ø25 hits a solid middle ground at 245.3 N, and the 30 mm stop screw is ideal for fine-tuning a feed depth or taking up mechanical tolerances during changeovers. The stop screw sets the forward end position only; it is not a mid-stroke lock.
For mounting, choose LB foot, FA flange, or TC trunnion brackets (the SDB pivot block is not offered on this adjustable variant). Back cover options include CA, U, R, and CM. Remember that a standard cylinder drifts on air loss—the fixed TPU bumper pads only decelerate the stroke end, so install an external rod lock or pilot check valve if you must hold a load vertically.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MIJ Adjustable Cylinder MIJ25X40-30S FAQ
The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M10x1.25.
The external stop screw shortens the extend stroke by up to 30 mm on-site, setting the forward end position without changing the cylinder; retract remains full stroke. The -S suffix means it has a built-in piston magnet for use with CMSG, DMSG, or EMSG sensors.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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